November 2013 - Pharo-users

Re: [Pharo-users] SimplePersistence ...

by Camillo Bruni

Good work! I happy for each new project on pharo-contribution. This is the evolution of pharo-contribution over the last year! On 2013-11-21, at 08:28, Torsten Bergmann <astares(a)gmx.de> wrote: > ... moved to STHub http://smalltalkhub.com/#!/~TorstenBergmann/SimplePersistence with page providing some initial docu and links > ... is now on CI https://ci.inria.fr/pharo-contribution/job/SimplePersistence/ > ... is GREEN for Pharo20, Pharo30 with stable (3.0) and development (3.0.1) since a few minutes > ... is loadable from Config browser in Pharo20 and Pharo3.0 > > Have fun > Torsten and Sean > >

Nov. 21, 2013

Re: [Pharo-users] Any problems known here?

by Norbert Hartl

Am 21.11.2013 um 06:57 schrieb Friedrich Dominicus <frido(a)q-software-solutions.de>: > Norbert Hartl <norbert(a)hartl.name> writes: > >> Am 20.11.2013 um 18:42 schrieb Friedrich Dominicus >> <frido(a)q-software-solutions.de>: >> >> I wonder if anyone has problems running a Pharo on a 64-bit System >> (Debian) with multiarch. Because strange enough it can suddenly >> not find >> vm-display-X11 any more >> >> You need to install the desktop variant: > I guess this will do for Ubuntu and Debian. > > But my probem was much more profane > and ldd o vm-display-X11 has informed me that two libraries where not > there. I installed them manually and after that Pharo start working > again. > > So yeah ldd is your friend. > > But thanks for taking the time helping me. > Can you tell which libraries were missing? Maybe the dependencies of the package needs to be adjusted. Can you tell which debian version and channel (stable,â¦) you are using and what files were missing? I think you know that but if you have the file you can find the package that needs to be installed by doing $ dpkg -S [filename] Norbert

Nov. 21, 2013

Re: [Pharo-users] Cleaning up Voyage Documentation

by Sabine KnÃ¶fel

Hi Johan, I use MongoDB and voyage for www.spesenfuchs.de and it works fine for me. My remarks: 1) you could also add VOMongoTransientDescription (see class comment) and VOMongoToManyDescription to chapter "enhancing storage". 2) "VORepository current reset" is imo important to know. As far as I understand, it forces to reload all objects from database. I need this after changing the VOMongo....Descriptions. 3) I like the possibility to have a look into the values in the database. For this, there are 2 very useful tools: http://rockmongo.com/ for windows and http://robomongo.org/ for mac. I recommend to use it. Helps a lot. 4) I think as far as you start to implement a real app, you need this solution to implement circular references http://forum.world.st/Voyage-Circular-references-td4691940.html#a4703493 5) another not so important point http://forum.world.st/your-opinion-about-storing-FixedDecimal-in-Mongo-td47… 6) I think you do also know: http://esug.org/data/ESUG2013/4-Thu/03-ESUG2013%20-%20VoyageTutorial.pdf http://smallworks.com.ar/web/blog 7) Last point, you could add some words/thoughts about data migration: what do I mean with this? Today, my model is as it is. My app runs. Data is generated in MongoDB. But after e.g. one month, I decide to change my model. Now, there are 2 possibilities: migrate all data while installing the new version or some kind of "lazy" migration at the moment, the object is loaded from mongo (I do this within the magritte description). Both has advantages and disadvantages and depends on the situation. I am interested in other opinions and solutions for this. If I can contribute more please tell me. Regards Sabine On Wed, Nov 20, 2013 at 9:10 PM, Johan Fabry [via Smalltalk] < ml-node+s1294792n4723834h49(a)n4.nabble.com> wrote: > Hi all, > > I am building a small app that uses Voyage and MongoDB as the database, > and so I had many questions regarding how to use it and found the > documentation lacking. After conversing with Esteban, I proposed that I > improve the 'Pharo for the enterprise' chapter on Voyage, based on his > responses to my questions. (See > https://ci.inria.fr/pharo-contribution/job/PharoForTheEnterprise/lastSucces… and > > https://github.com/SquareBracketAssociates/PharoForTheEnterprise-english/tr… for > the sources) > > So a heads-up: I would like to take a 'lock' on that text for some days > (to avoid conflicts and the associated unpleasantness), as I go improving > and expanding it in the next few days. > > Also, if you have questions and/or remarks about Voyage and/or the > documentation, shoot! I will do my best to address them. > > Greetings, > > ---> Save our in-boxes! http://emailcharter.org <--- > > Johan Fabry - http://pleiad.cl/~jfabry > PLEIAD lab - Computer Science Department (DCC) - University of Chile > > > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://forum.world.st/Cleaning-up-Voyage-Documentation-tp4723834.html > To start a new topic under Pharo Smalltalk Users, email > ml-node+s1294792n1310670h65(a)n4.nabble.com > To unsubscribe from Pharo Smalltalk Users, click here<http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&no…> > . > NAML<http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instan…> > -- View this message in context: http://forum.world.st/Cleaning-up-Voyage-Documentation-tp4723834p4723922.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 21, 2013

Re: [Pharo-users] Help with SQLite3 package

by StÃ©phane Ducasse

On Nov 20, 2013, at 6:13 PM, Michel <michel.revesche(a)wanadoo.fr> wrote: > Hi pharoers, > > I am a newbie with Pharo. Welcome :) We are all newbies on different topics. > I installed the SQLite3 package in the Pharo2 image with the MetacelloConfigurationBrowser and tried a test with this script : > db := SQLiteConnection fileNamed: '/home/michel/base_CD/BaseCD.db'. > resu := db executeQuery: 'SELECT * FROM T_album'. > resu inspect. I do not know :) Now somebody will probably help. Now this is a cool example of why we need a test and automatic package validation. > And I got this error : External module not found. It looks like you need a plugin > I am on Fedora linux and I think that I should give somewhere (in SQLiteReference class ?) the address of the libsqlite3.so file. Am I right ? I do not know but it depends on the logic of the plugin because a plugin could have the logic to find the lib. > > Kind Regards, > Michel. >

Nov. 21, 2013

SimplePersistence ...

by Torsten Bergmann

... moved to STHub http://smalltalkhub.com/#!/~TorstenBergmann/SimplePersistence with page providing some initial docu and links ... is now on CI https://ci.inria.fr/pharo-contribution/job/SimplePersistence/ ... is GREEN for Pharo20, Pharo30 with stable (3.0) and development (3.0.1) since a few minutes ... is loadable from Config browser in Pharo20 and Pharo3.0 Have fun Torsten and Sean

Nov. 21, 2013

Re: [Pharo-users] Scaled PNG image

by StÃ©phane Ducasse

On Nov 20, 2013, at 4:54 PM, Hilaire Fernandes <hilaire.fernandes(a)gmail.com> wrote: > Hello, > > In Pharo 2.0 (true in 1.4 as well), it looks PNG bitmap are wrongly > rotated or scaled when they contain alpha transparency. > > In the example bellow with the joined bitmap, the alpha gray color are > rendered darker when the imagemorph is scaled or rotated. > > Sqeak does not suffer this problem hilaire may be you should have a look at the changes made in the graphics package of squeak to identify the change. We should have more tests. Stef > > > | dir morph transform form| > dir := FileSystem disk workingDirectory parent. > morph := (ImageReadWriter formFromFileNamed: (dir / 'bubble.png') > fullName) asMorph. > transform := TransformationMorph new asFlexOf: morph. > transform smoothingOn ; angle: Float pi / 3; scale: 1. > transform openInWorld > > > Thanks > > Hilaire > > > -- > Dr. Geo http://drgeo.eu > <bubble.png>

Nov. 21, 2013

Re: [Pharo-users] #subStrings: alternative preserving separators

by StÃ©phane Ducasse

Propose allSubStrings: with a couple of tests and a nice comment. so that we improve the lib. For me findTokens:escapedBy: is Really Bad Name looking from prehistorical ages. Stef On Nov 20, 2013, at 6:57 AM, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > No, there is no #allSubStrings: . > > However, after your email (and having solved my issue in other way) I > just found #findTokens:escapedBy: which does exactly what I need :) > > 'foo,baz,"3,14",,foobaz' findTokens: $, escapedBy: $". -> an > OrderedCollection('foo' 'baz' '3,14' '' 'foobaz') > > Regards! > Esteban A. Maringolo > > > 2013/11/20 Joachim Tuchel <jtuchel(a)objektfabrik.de>: >> In VA, tgey just introduced allSubStrings: for this matter, because subStrings was changed to return only non-empty parts... >> Do you find that in Pharo? >> >> Joachim >> >> "Esteban A. Maringolo" <emaringolo(a)gmail.com> schrieb: >> >>> I have a string like 'foo|bar||foobar|' and I want to split it into >>> separate tokens like: >>> >>> 'foo|bar||foobar|' subStrings: $| -> #('foo' 'bar' '' 'foobar' ''). >>> >>> It is... to INCLUDE empty strings (or nil for that case) for the >>> elements between to consecutive separators. >>> >>> I can't found a method implementing this in Pharo (in Dolphin it works >>> as I expect). >>> >>> Thank you! >>> >>> Esteban A. Maringolo >>> >>> >

Nov. 21, 2013

Problems while loading Magritte to pharo2.0

by Thushar G R

Hi All, I encounter problems while installing magritte3 from the configurations browser. While loading, it removes #trimBoth #trimRight etc. messages from String. I wonder if anyone else is experiencing the problem. Thanks already, thushar

Nov. 21, 2013

Re: [Pharo-users] Any problems known here?

by Friedrich Dominicus

Norbert Hartl <norbert(a)hartl.name> writes: > Am 20.11.2013 um 18:42 schrieb Friedrich Dominicus > <frido(a)q-software-solutions.de>: > > I wonder if anyone has problems running a Pharo on a 64-bit System > (Debian) with multiarch. Because strange enough it can suddenly > not find > vm-display-X11 any more > > You need to install the desktop variant: I guess this will do for Ubuntu and Debian. But my probem was much more profane and ldd o vm-display-X11 has informed me that two libraries where not there. I installed them manually and after that Pharo start working again. So yeah ldd is your friend. But thanks for taking the time helping me. Regards Friedrich

Nov. 21, 2013

Re: [Pharo-users] [Athens] Finding if a line passes through a specific pixel .

by kilon alios

yes I found the formula for straight lines and I was wondering what was the one for bezier curves, so your reply could not have come a better moment. Thanks I will study it and implement it. On Wed, Nov 20, 2013 at 9:21 PM, Hilaire Fernandes < hilaire.fernandes(a)gmail.com> wrote: > Hello, > > You may want to calculate the distance between the mouse position and > your path (I guess a bezier curve). Then given this distance and a > tolerance to zero you decide if the mouse position is more or less on > your path. Calculating the distance you will also get for free the place > where to add a point on your path. > > http://blog.gludion.com/2009/08/distance-to-quadratic-bezier-curve.html > > Hilaire > > > Le 14/11/2013 21:07, kilon alios a Ã©crit : > > In order to do that I will have to check that the line passes through a > > specific pixel. Or to be more correct that the place that mouse has > > clicked is where my path passes through. How I do that ? Can Athens do > > that ? Can athens tell me which pixels my path passes through ? > > > > > -- > Dr. Geo http://drgeo.eu > > >

Nov. 20, 2013